13815 -- U.S. ZIP code Municipality (1990): NORWICH, New York All ZIPs for this municipality (1990): 13815 Population (2000): 14019 Housing Units (2000): 6580 Land area (2000): 106.214616 sq. miles (275.094580 sq. km) Water area (2000): 0.331881 sq. miles (0.859569 sq. km) Total area (2000): 106.546497 sq. miles (275.954149 sq. km) Located within: New York (NY) Location: 42.541733 N, 75.526122 W